Acid - chemical solution which has a pH lower than 7 Base - chemical solution which has a pH higher than 7 Neutral - chemical solution which has a pH of 7
Arrehnius acid – ionizes to yield H+ Arrehnius base – ionizes to yield OH- Bronsted Lowry – consists of H+ donors (acids) and H+ acceptors (base) Lewis Acid-Base – Acids accept the electron pair while bases donate them
Sample Problems
Give the formula of the conjugate base
HPO42- What you do is since the formula is a C. Base, you take away a H+ or a hydrogen molecule and that would mean the charge would decrease by one. so the answer would be PO4-3
NH4+ What you do is since it is also a C. Base, you take away a H+ so the answer is NH3
2. Give the formula of the conjugate acid a. NH3 What you do since it is a C Acid is that you would add a H+ molecule to it with a +1 charge. The answer would be NH4+ b. NH2- What you do is that you would add the H+ molecule and charge to the C. Acid so your answer is NH3
Main LEQ: How do acids and bases react with each other, and how do pH and pOH come into play?
LEQ:
What are the basic properties of acids and bases?
What are the three acid/base definitions?
How is pH calculated for strong and weak acids?
How is a neutralization reaction used in a titrimetric analysis?
Acid - chemical solution which has a pH lower than 7
Base - chemical solution which has a pH higher than 7
Neutral - chemical solution which has a pH of 7
Arrehnius acid – ionizes to yield H+
Arrehnius base – ionizes to yield OH-
Bronsted Lowry – consists of H+ donors (acids) and H+ acceptors (base)
Lewis Acid-Base – Acids accept the electron pair while bases donate them
Sample Problems
- Give the formula of the conjugate base
- HPO42- What you do is since the formula is a C. Base, you take away a H+ or a hydrogen molecule and that would mean the charge would decrease by one. so the answer would be PO4-3
- NH4+ What you do is since it is also a C. Base, you take away a H+ so the answer is NH3
2. Give the formula of the conjugate acida. NH3 What you do since it is a C Acid is that you would add a H+ molecule
to it with a +1 charge. The answer would be NH4+
b. NH2- What you do is that you would add the H+ molecule and charge to the C. Acid so your answer is NH3
Main LEQ: How do acids and bases react with each other, and how do pH and pOH come into play?
LEQ:
What are the basic properties of acids and bases?
What are the three acid/base definitions?
How is pH calculated for strong and weak acids?
How is a neutralization reaction used in a titrimetric analysis?
How do buffers resist pH change?
Resources
__http://www.chem4kids.com/files/react_acidbase.html__
__http://www.visionlearning.com/library/module_viewer.php?mid=58__
__http://www.files.chem.vt.edu/RVGS/ACT/notes/Notes_on_acids_and_b____ases.html__
__http://www.chemtutor.co____m/acid.htm__